Some things that develop as normal in elephant sharks and other marine life can mimic things we see in human disease. That makes these 'mutants' ideal for study to find out why things go wrong in humans.

African camels could prove to be an important source of information about the MERS virus.
Eric FèvreOctober 19, 2015

Encephalitis lethargica, an infectious disorder that only once appeared in epidemic form (1916-1926), is largely forgotten now. But this curious illness provided significant insights into brain function…